Tool mounting



Jan. Z2, .1946. jM. D. ADZAMAy TOOL MOUNTING Filed March 6, -1943 d" ll i v su? 17 Mael-Mel. `D.DzAMA.

@1mm j Patented Jan. 22, 1946 rooLMoUNTING--. .Y Michael D: D'zama, Cleveland, 0hio- 4 Application March o, 194e, seiialnmiisaie t Y 1I Claims.y (Clnica-Qdi' Thisl -invention relates to a tool mounting th'etool may bev readilyand. azccrately addusted .efr'oxn Ytime to time relative to@ 'its sup#r pertuforf carrying: out boring or other: operations. showing. one; application of improvement illustrated` as. ari-instablyk sup-v .pantin-g.;.tlievztool` ofV a boring mill, wherebythe tool may be adjusted radially into- .operating position. @011eobject of the invention is:r` to providefa'n improved mounting ofc' this character capablefof tixedlly 'Amaintaining'the shanki of the to'oll its -adiustedpositionz Y .Another object ofthe. invention .is to provide van;e i-,Imznoved tool mounting. of 'this character `whereinthe adjustment of the part orv element \t'l;ti :lgt;supports'.the tool4 shank, may be moved pagedetermined` distances without dangenofbacklash,V whereby setting ,ot the too-1 with/respect togtlfvleworkis facilitated.j i

. f othenobjectjof the invention is'to provide improved; mounting of this character com,- ptisi-ng few `partev capable' ofready assembly and interrelated to simplify and economiz'e then:

coriskt'ruction.Y,V .1 Y notheroblvject ofl the invention is topro'vide an improvedgmounting ofnthis. charactera-llthe Dras @which may be completely assembled be.- fore. installation in thefsupport 01j` Casin-gA on; theV Ano-ther object of the mvention-is toprovide anfmproved mounting of this characterfhaving arnov'ablesupportingmember for thetoolfsha-nk anLguidewal-ls therefor, certain @fthe-guide wallsffbeing. adapted. to beflexed to increase the friction between it` and the supporting member'. ,Qther objectsooi the invention. willy'be-apparent `:to those skilled Y in the art` to which my; inventionielates from the followingy descriptiontaken conn'ecti'onl with .the accompanying d1"a,v.ir1g, jiilerini.

bodymg; myk invention, with atool supported therein' land showing the operatin of the latter for carrying out a boring operation.1 Y

Fig. 1a isasectionl ontheline. |a\|-a, oit-Fig; 1. fli gl2,ispal section ontheline 2 2. of 3. .y '31`is'a1secti`onon theline 3 3- ot Fig. 2. ffFgsJ and. 5 are sections on the lines-v4f4vand 5:45 respectively, `of* 2.

j j Flgg fis; a 'fragmentary elevation on kthe i line fSEi'gA! Q .7 f i.

I In thjefdrawing', I.. indicates .thev tail; stock of a jboring' milli arranged 'to'"receive-- the shanlc` 2; oi y0110 @eine 33 ih'Wflh-"a-meuetesiedie @ated as. an entirety .amjis removabiymonmee;

the end of .the-.casing remote `from the shank 2 being: open to V`receivel .the mounting 4i-y .The mounting klt consists of the following. elements.:

5 indicatesasan entirety a. guidezimemiber for: a

movable or adjustable member 6,. in whichffthe shank Aof the tool B isy removably supportedas later set forth. ,.Theguide member' Sfcomprises' afbase`V 5 Shaving at itsl opposite; ends: upstanding. Wa1ls"5a, 5la.,xthe surfaceA 51: of .the base between the walls 5a, SaS/forming a. slide. wallzor wayfor the supporting member. 6 and=each of` the walls 5a, 5a", serving tmlimit .theafad'justmentnof the member6when ,moved .in oneedi-r'e'ction. t

Thevouter Wall 5m' ofrthefbase: 5 .is ofv cul-'v1'.-

linear shape to tthe'inneriwall oi'the-casing.It.V

and intermediate the-slidewall 5x'. and bottom wall of the base 5,. the latter: istormed with. a slot.. 'I'. (preferably extending therethrough=- at right. angles: to the axis of the casing), the upper wallof which is preferably normally paralleli to the yslide wall 5x. 8*; 9', indicate spaced guide de- 'vi-ces supportedat. their opposite endsinn-eeesses formed in the upstandingwalls 5a, 5a.', and rig'- idly secured theretol by. countersunkscrews Ml.; The opposite ends of theguide devices 8,. 9; are rounded off so asI to't the innerLwall. of. the easing3.l l.. "By f preference, Athe .wall :of .one guide .devicethe'outer device 9. for example-is extended and curvilinearly shaped from end tolend to-t the inner wallof the casing. v3. The sidefwalis. o1'. the guide .devices ,4 9i. are preferably inclined downwardly and. inwardly and t. correspondingly shaped recesses 6a formed; in the. upper' walll of the member Starguidev the latter. f

From the foregoing description. it will) be ob:- served that; theimer'nber 65 slides on the way 5w, and is guided by the devices, 8, 9, in' a direction at right angles' tothe axistvot the casing 3.. Suitable countersunkscrews tl .disposed radially otthe `casing :3 and' extended -into and: through openings4 |12' formedv in` the side Wall of; the casing 3 andthreaded intoopenings formedLi-nnthe basen, tserve to secure the mounting. inthe casing. 3.,. f w f The cuterl end of supportingmembert vris formed with an inwardly extendingopening:` Etf, and. provided witha` boss: 6121' the"reaarountl,.` the opening formingfa' seat for'tne inner end'foi the tool shank A, Which/@is secured therein by-"al'set screwv t3: threaded. through: the boss 13b" 'andi a set screw I4 threaded intoA an opening Ee formed inithepmemberiyy .w Y As-.shownFig-s ytlsreY insertion et andaccess to the screw I 4 is provided for by aligned openings Illa', I4a, formed in the wall 5a and casing 3, respectively.

The supporting member 6 inwardly of the shank seat 6b is formed with a through opening I5 extending at right angles to and having an axis intersecting the axis of the casing 3. The wall of the opening I5 from end to end thereof is provided with screw threads of any desired pitch and accommodates and -supports a Vfeed screw I6; thefoppo'site ends of which abut the inner faces of the upstanding walls 5a, 5a', whereby endwise movement of the screw I6 is prevented.

As will be observed in Figs. 3, 4 and 5, the width of the member 6 is less than the distance between the walls 5a, 5a', so that by turning the screw I6 the supporting member 6 may be moved on the way 5x into engagement with either wall. At one end the feed screw I6 is provided with an axially disposed hollow extension. Il, the innerwall of the extension being shaped in-cross section toreceive a key, whereby the screw may be rotated, whereas its outerend portion is exteriorly threaded; whereby a suitable dial I8 may be secured to the `extension IFI, .and-'by means of suitable graduations andfindicia thereon, deter'- mine the angular movement of the screw and the measured adjustment of the member 8, to position the .tool B for boring', as shown in Figs. l andila. The casing 3 is formed with kan opening I9 to accommodate the dial I8. By preference, the outer annual faceof the dialV I8V does not extend beyond'the outerwall of the casing 3 and conforms to the curvature thereof to eliminate any protruding portion thereof.

indicates a through .opening formed in the base 5 between its bottom wall and the slot 1, in a plane at right angles to the slot and midway between the planes of the walls 5a, 5a. The wall of the opening 20 is provided with screw threadsl to take a screw 2i which is tightened against the top wall of the slot 1,the effect of which is to flex the wall of .the base 5.', (the .metal of the base 5 being of .a character to permit such op' eration) between the Awalls 5a, 5a', upwardly approximately one-ten thousandths of an inch, so that the intermediate portion of the slide way 5m is forced against the supporting member 6 to insure friction between these parts and thus prevent free movement of the member 6. Accordingly,resistance to turning of the dial is' provided to prevent it being easily turned, except byadenite applied force, so that when operated, danger of the dial being turned beyond the desired angular distance is substantially eliminated. The casing 3 is formed with an opening 22, .in registry with the opening 20,: to permit access to the screw 2I. y j

It will be'observedthat all of the parts 'con-l stituting the mounting maybe -assembled with the guides in rigid relation and inserted ias a unit into the casing 3. By preferenceuthe outer 'walls of the guides 5, 8 and Shave a'close sliding, substantially pressed-in fit with the .inner `walls of the casing 3, so that the screws II merely serve to prevent relative movement between these parts. The outer end of the casing maybe provided with'a removable cover (not shown) To permit the screw I6 and supporting member to be assembled in the guide member '5, the upstanding wall 5a is formed'with an inwardly extending elongated recess or slot 5a.

23 indicates a transverse opening orslot'formed in and extending longitudinally ffthe guide device 9 and 24 indicates a through opening formed in the guide device intermediate its ends and extending from the opening 23 outwardly radially of the casing 3. The walls of the opening 24 are provided with screw threads to take a screw 25 which may be tightened against the lower wall of the opening 23 to slightly flex it and thereby increase the friction between the side walls of the guide device 9 and guide surfaces 6a of the supporting member 6, to thereby supplement the friction between guide lway 5:1: and the member 6. However, due to the fact that the wall of the guide device engaged by the screw is connected to the walls of the device 9 at its ends only, it

' movement.

may be flexed sufficiently by the screw 25 to bind its guide surfaces to the guide surfaces 5a of member 6, so that when the latter is adjusted the screw 25 may be further tightened and serve as the means for locking the member 6 against The casing 3 is formed with an opening 25 to permit access to the screw 25.

It will also be observed that the mounting con'- sists of few parts employing a main guide member, for one side ofthe slidable member 6 and sepa-,- rate guidemembers for the opposite side thereof, which members haveouter Walls complementary to and engaging diametrically opposite inner walls of the casing 3. Y .l

As shown in Figs. 3 and 5, when the supporting member 6 is positioned against the upstanding Wall 5a, the axis of the tool shankV A is in axial alignmentilwith the axisof the Acasing 3, so that rotation of the dial I8 to rotatethe screw I6 serves to move the member 6 and tool shank A radially of this axis a predetermined distance determined by the angular movement of Athe dial I8, it being understood that the graduations thereon have a fixed relation to the pitch of the screw threads onthe screw I6. y i

It will also be noted that'the tool support 6 is movable between xedguidesandthat the operating or feed screw is supported substantially from end to end entirely by they support, but held against endwise movement by engagement with walls 5a, 5a which form part of one of the guides. This arrangement eliminates the employment of bearings for the feed screw at opposite ends thereof and insures at al1 times alignment of the feed screw with the threaded opening in the support 6 as well as engagement between the screw threads from end to end of the support, sothat danger of back-lash in making an adjustment is avoided. It also enables the assembly to be made of a minimum number of parts and reduces the area of the surfaces that have relatively moving contact.

To those skilled in the art to which my invention relates many changes in construction and widely differing embodimentsand applications of the invention will suggest themselves without departing from the spirit and scope of theinL vention. My disclosures and the description here? inare purely'illustrative andare not intended tobe in any sense limiting.` v I y *WhatIclaimisz'w y 1. In a tool mounting, kthe vcombination with a casing fadapted to b e supported von" a machine, of a movable member for supporting the shank of a tool,v a set of guidesseated inV said casing and'engaging the opposite sides of said .member to slidably support it therebetween andthe inner walls of said casing, `means for Aconnectingsaid guides together, said member beingv formes 'with avthrough screw threaded opening, iaigfeedscrew supported insaid opening, means on on'eofsad casing and comprising a movable member forV supporting the shank of a tool, a set of guides engaging the opposite sides of said member to slidably support it therebetween, means for securing said guides together, said member being formed with a through screw threaded opening, a feed screw `supported in said opening, means on one of said guides abutting the opposite ends of said screw to prevent axial movement thereof, the exterior walls of said guides being shaped to slidably iit the inner walls of said casing, whereby the mounting may be bodily positioned in or removed therefrom, and means for securing the mounting in the casing.

4. In a tool mounting, the combination with a casing adapted to be mounted on a machine, of a movable member formed with a seat to receive the shank of a tool, a guide member seated on the inner wall of said casing andrcomprising a base forming a slide way for one side of said member, spaced guides engaging the opposite side of said member, means for securing said spaced guides and base in fixed relation, said member being formed with a through screw threaded opening, a feed screw supported in said opening, upstanding walls at the opposite sides of said base abutting the opposite ends of said screw to prevent axial movement thereof and limit the movement of said member in either direction, and means for securing one of said guides in said casing. f

5. In a tool mounting, the combination with a casing adapted to be mounted on a machine, of a movable member formed with a seat to receive Y the shank of a tool, a guide device comprising a base fitting the inner wall of said casing and having spaced upstanding walls, the surface of the base between said walls forming a slide way for one side of said member, spaced guides engaging the opposite side of said member and secured to the upper ends of said walls, said member being formedV with a through screw threaded opening, a feed screw supported in Said opening and engaging said walls at its opposite ends, whereby said walls prevent endwise movement of said screw and limit the endwise movement of said member, and means for securing said first mentioned guide to the wall of said casing.

6. A mounting as claimed in claim wherein said base is formed with an elongated through tion of the base forming said guide way to iiex it against said movable member.

8. In a tool mounting, the combination with a casing adapted to be supported on a machine, of

a movable member formed with a seat to receive the shank of a tool, a base in said casing comprisingspaced upper and lower walls rigidly connected along their opposite sides to form a through opening between them and upstanding walls at the opposite ends of said upper wall extending at right angles to the connections between said upper and lower walls, the upper surface of said upper wall between said upstanding walls forming a slide way for one side of said movable member, a guide device in saidcasing supported at its opposite ends on said upstanding walls and engaging the o-pposite side of said opening below said slide way and substantially movable member, said movable member being formed with a through screw threaded opening, a feed screw mounted in said screw threaded opening and abutting said opstanding walls at its opposite ends, whereby said walls prevent endwise movement of said feed screw, the lower wall of said base being formed with a screw threaded opening, a screw in said last mentioned opening arranged yto be tightened against said upper wall of said base to flex it, whereby the slide way engages said movable member under pressure, and means forrsecuring said base -to the wall of said casing.

9. A mounting as claimed in claim 1 wherein means are provided for flexing a wall of one of said guides for providing pressure engagement thereof with said member and separate means are provided for flexing one of the remaining guides for locking said member against movement.

10. A mounting as claimed in claim 5 wherein one of said spaced guides is formed with an elongated opening and a threaded opening leading therefrom, and a screw in said threaded opening arranged to engage the remote wall of said elongated opening to flex the walls of said guide toward said member.

11. In a tool mounting, the combination with a casing adapted to be mounted on a machine, of

a movable member formed with a seat to receive the shank of a tool, a guide device comprising a base fitting the inner wall of said casing and spaced upstanding walls, the surface of the base between said walls forming a slide Way for one side of said member, 'said base below said slide way being formed with an elongated opening and below said opening formed with a screw threaded opening, .a screw'in said threaded opening arranged to be tightened against the remote wall of said elongated opening to flex said slide way against said member, spaced guides engaging the opposite side of said member and supported on the upper ends of said walls, one of said spaced guides above its guide surfaces being formed with an elongated opening andabove said opening formed with a screw threaded opening, a screw in said last mentioned threaded opening arranged to be tightened against the remote wall of said last mentioned elongated opening to flex the guide surfaces of said spaced guide, against said member, said member being formed with a through screw threaded opening, a feed screw mounted in said opening and engaging said Walls at its opposite ends, whereby said walls prevent endwise movement of said screw, and means for securing said first mentioned guide to the wall of said casing.

MICHAEL D. DZAMA. 

